JsonParseException：无法识别的令牌 'http'：期待（'true'、'false' 或 'null'）
JsonParseException: Unrecognized token 'http': was expecting ('true', 'false' or 'null')
我们有以下字符串，它是写入 HDFS 文件的有效 JSON。
{
"id":"tag:search.twitter.com,2005:564407444843950080",
"objectType":"activity",
"actor":{
"objectType":"person",
"id":"id:twitter.com:2302910022",
"link":"http%3A%2F%2Fwww.twitter.com%2Fme7me4610012",
"displayName":"",
"postedTime":"2014-01-21T11:06:06.000Z",
"image":"https%3A%2F%2Fpbs.twimg.com%2Fprofile_images%2F563125491159162881%2FfypkHK3M_normal.jpeg",
"summary":"ضًـأّيِّعٌهّ أّروٌأّحًنِأّ تٌـشُـتٌـهّـيِّ مًنِ يِّفُـهّـمًهّـأّ فُـقُط حسابي بالإنستقرام lloooo_20",
"links":[
{
"href":null,
"rel":"me"
}
],
"friendsCount":10503,
"followersCount":10325,
"listedCount":12,
"statusesCount":84957,
"twitterTimeZone":null,
"verified":false,
"utcOffset":null,
"preferredUsername":"me7me4610012",
"languages":[
"ar"
],
"favoritesCount":17
},
"verb":"share",
"postedTime":"2015-02-08T12:56:35.000Z",
"generator":{
"displayName":"Twitter for Android",
"link":"http%3A%2F%2Ftwitter.com%2Fdownload%2Fandroid"
},
"provider":{
"objectType":"service",
"displayName":"Twitter",
"link":"http%3A%2F%2Fwww.twitter.com"
},
"link":"http%3A%2F%2Ftwitter.com%2Fme7me4610012%2Fstatuses%2F564407444843950080",
"body":"RT @sckud1: فيديو: إمام يرفض بغضب الصلاة على أحد قتلى حزب الله في سوريا بسبب إطلاق النار: ماعاد http%3A%2F%2Ft.co%2FC55SaQKmUV http%3A%2F%2Ft.co%2Ft5TjIln…",
"object":{
"id":"tag:search.twitter.com,2005:564407126526013440",
"objectType":"activity",
"actor":{
"objectType":"person",
"id":"id:twitter.com:462268717",
"link":"http%3A%2F%2Fwww.twitter.com/sckud1",
"displayName":"صفق الهوى",
"postedTime":"2012-01-12T19:24:17.000Z",
"image":"https%3A%2F%2Fpbs.twimg.com%2Fprofile_images%2F508424482885615616%2FmPBGZBPx_normal.jpeg",
"summary":"اعلانك في سوق الخليج يحقق لك الوصول الى اكثر من مليون متابع خليجي http%3A%2F%2Fmarketgulf.com",
"links":[
{
"href":"http%3A%2F%2Fmarketgulf.com",
"rel":"me"
}
],
"friendsCount":435237,
"followersCount":464951,
"listedCount":708,
"statusesCount":1071685,
"twitterTimeZone":"Riyadh",
"verified":false,
"utcOffset":"10800",
"preferredUsername":"sckud1",
"languages":[
"ar"
],
"location":{
"objectType":"place",
"displayName":"Made in K S A"
},
"favoritesCount":77
},
"verb":"post",
"postedTime":"2015-02-08T12:55:19.000Z",
"generator":{
"displayName":"Tweet Old Post",
"link":"http%3A%2F%2Fwww.ajaymatharu.com%2F"
},
"provider":{
"objectType":"service",
"displayName":"Twitter",
"link":"http%3A%2F%2Fwww.twitter.com"
},
"link":"http%3A%2F%2Ftwitter.com%2Fsckud1%2Fstatuses%2F564407126526013440",
"body":"فيديو: إمام يرفض بغضب الصلاة على أحد قتلى حزب الله في سوريا بسبب إطلاق النار: ماعاد http%3A%2F%2Ft.co%2FC55SaQKmUV http%3A%2F%2Ft.co%2Ft5TjIlnZgN",
"object":{
"objectType":"note",
"id":"object:search.twitter.com,2005:564407126526013440",
"summary":"فيديو: إمام يرفض بغضب الصلاة على أحد قتلى حزب الله في سوريا بسبب إطلاق النار: ماعاد http%3A%2F%2Ft.co%2FC55SaQKmUV http%3A%2F%2Ft.co%2Ft5TjIlnZgN",
"link":"http%3A%2F%2Ftwitter.com%2Fsckud1%2Fstatuses%2F564407126526013440",
"postedTime":"2015-02-08T12:55:19.000Z"
},
"favoritesCount":0,
"twitter_entities":{
"hashtags":[
],
"trends":[
],
"urls":[
{
"url":"http%3A%2F%2Ft.co%2FC55SaQKmUV",
"expanded_url":"http%3A%2F%2Fwww.hasterya.com%2Farchives%2F34688utm_source%3DReviveOldPost%26utm_medium%3Dsocial%26utm_campaign%3DReviveOldPost",
"display_url":"hasterya.com/archives/34688…",
"indices":[
85,
107
]
}
],
"user_mentions":[
],
"symbols":[
],
"media":[
{
"id":564407126341468160,
"id_str":"564407126341468160",
"indices":[
108,
130
],
"media_url":"http%3A%2F%2Fpbs.twimg.com%2Fmedia%2FB9UtSoJIQAA07-r.jpg",
"media_url_https":"https%3A%2F%2Fpbs.twimg.com%2Fmedia%2FB9UtSoJIQAA07-r.jpg",
"url":"http%3A%2F%2Ft.co%2Ft5TjIlnZgN",
"display_url":"pic.twitter.com/t5TjIlnZgN",
"expanded_url":"http%3A%2F%2Ftwitter.com%2Fsckud1%2Fstatus%2F564407126526013440%2Fphoto%2F1",
"type":"photo",
"sizes":{
"large":{
"w":320,
"h":180,
"resize":"fit"
},
"thumb":{
"w":150,
"h":150,
"resize":"crop"
},
"small":{
"w":320,
"h":180,
"resize":"fit"
},
"medium":{
"w":320,
"h":180,
"resize":"fit"
}
}
}
]
},
"twitter_extended_entities":{
"media":[
{
"id":564407126341468160,
"id_str":"564407126341468160",
"indices":[
108,
130
],
"media_url":"http%3A%2F%2Fpbs.twimg.com%2Fmedia%2FB9UtSoJIQAA07-r.jpg",
"media_url_https":"https%3A%2F%2Fpbs.twimg.com%2Fmedia%2FB9UtSoJIQAA07-r.jpg",
"url":"http%3A%2F%2Ft.co%2Ft5TjIlnZgN",
"display_url":"pic.twitter.com/t5TjIlnZgN",
"expanded_url":"http%3A%2F%2Ftwitter.com%2Fsckud1%2Fstatus%2F564407126526013440%2Fphoto%2F1",
"type":"photo",
"sizes":{
"large":{
"w":320,
"h":180,
"resize":"fit"
},
"thumb":{
"w":150,
"h":150,
"resize":"crop"
},
"small":{
"w":320,
"h":180,
"resize":"fit"
},
"medium":{
"w":320,
"h":180,
"resize":"fit"
}
}
}
]
},
"twitter_filter_level":"low",
"twitter_lang":"ar"
},
"favoritesCount":0,
"twitter_entities":{
"hashtags":[
],
"trends":[
],
"urls":[
{
"url":"http%3A%2F%2Ft.co%2FC55SaQKmUV",
"expanded_url":"http%3A%2F%2Fwww.hasterya.com%2Farchives%2F34688utm_source%3DReviveOldPost%26utm_medium%3Dsocial%26utm_campaign%3DReviveOldPost",
"display_url":"hasterya.com/archives/34688…",
"indices":[
97,
119
]
}
],
"user_mentions":[
{
"screen_name":"sckud1",
"name":"صفق الهوى",
"id":462268717,
"id_str":"462268717",
"indices":[
3,
10
]
}
],
"symbols":[
],
"media":[
{
"id":564407126341468160,
"id_str":"564407126341468160",
"indices":[
139,
140
],
"media_url":"http%3A%2F%2Fpbs.twimg.com%2Fmedia%2FB9UtSoJIQAA07-r.jpg",
"media_url_https":"https%3A%2F%2Fpbs.twimg.com%2Fmedia%2FB9UtSoJIQAA07-r.jpg",
"url":"http%3A%2F%2Ft.co%2Ft5TjIlnZgN",
"display_url":"pic.twitter.com/t5TjIlnZgN",
"expanded_url":"http%3A%2F%2Ftwitter.com%2Fsckud1%2Fstatus%2F564407126526013440%2Fphoto%2F1",
"type":"photo",
"sizes":{
"large":{
"w":320,
"h":180,
"resize":"fit"
},
"thumb":{
"w":150,
"h":150,
"resize":"crop"
},
"small":{
"w":320,
"h":180,
"resize":"fit"
},
"medium":{
"w":320,
"h":180,
"resize":"fit"
}
},
"source_status_id":564407126526013440,
"source_status_id_str":"564407126526013440"
}
]
},
"twitter_extended_entities":{
"media":[
{
"id":564407126341468160,
"id_str":"564407126341468160",
"indices":[
139,
140
],
"media_url":"http%3A%2F%2Fpbs.twimg.com%2Fmedia%2FB9UtSoJIQAA07-r.jpg",
"media_url_https":"https%3A%2F%2Fpbs.twimg.com%2Fmedia%2FB9UtSoJIQAA07-r.jpg",
"url":"http%3A%2F%2Ft.co%2Ft5TjIlnZgN",
"display_url":"pic.twitter.com/t5TjIlnZgN",
"expanded_url":"http%3A%2F%2Ftwitter.com%2Fsckud1%2Fstatus%2F564407126526013440%2Fphoto%2F1",
"type":"photo",
"sizes":{
"large":{
"w":320,
"h":180,
"resize":"fit"
},
"thumb":{
"w":150,
"h":150,
"resize":"crop"
},
"small":{
"w":320,
"h":180,
"resize":"fit"
},
"medium":{
"w":320,
"h":180,
"resize":"fit"
}
},
"source_status_id":564407126526013440,
"source_status_id_str":"564407126526013440"
}
]
},
"twitter_filter_level":"low",
"twitter_lang":"ar",
"retweetCount":1,
"gnip":{
"matching_rules":[
{
"tag":"ISIS66"
}
],
"urls":[
{
"url":"http%3A%2F%2Ft.co%2Ft5TjIlnZgN",
"expanded_url":"http%3A%2F%2Ftwitter.com%2Fsckud1%2Fstatus%2F564407126526013440%2Fphoto%2F1",
"expanded_status":200
},
{
"url":"http%3A%2F%2Ft.co%2FC55SaQKmUV",
"expanded_url":"http%3A%2F%2Fwww.hasterya.com%2Farchives%2F34688utm_source%3DReviveOldPost%26utm_medium%3Dsocial%26utm_campaign%3DReviveOldPost",
"expanded_status":200
}
],
"klout_score":50,
"language":{
"value":"ar"
}
}
}
编辑
我们配置了一个 flume 代理，它从该文件读取数据并将其传递给 Solr 接收器，但不幸的是，标题中的这个异常被抛出。
这是堆栈跟踪
org.kitesdk.morphline.api.MorphlineRuntimeException: com.fasterxml.jackson.core.JsonParseException: Unrecognized token 'http': was expecting ('true', 'false' or 'null')
at [Source: java.io.ByteArrayInputStream@20d7aa52; line: 1, column: 9]
at org.kitesdk.morphline.stdio.AbstractParser.doProcess(AbstractParser.java:98)
at org.kitesdk.morphline.base.AbstractCommand.process(AbstractCommand.java:156)
at org.kitesdk.morphline.stdlib.TryRulesBuilder$TryRules.doProcess(TryRulesBuilder.java:120)
at org.kitesdk.morphline.base.AbstractCommand.process(AbstractCommand.java:156)
at org.kitesdk.morphline.base.AbstractCommand.doProcess(AbstractCommand.java:181)
at org.kitesdk.morphline.base.AbstractCommand.process(AbstractCommand.java:156)
at org.apache.flume.sink.solr.morphline.MorphlineHandlerImpl.process(MorphlineHandlerImpl.java:128)
at org.apache.flume.sink.solr.morphline.MorphlineSink.process(MorphlineSink.java:141)
at org.apache.flume.sink.DefaultSinkProcessor.process(DefaultSinkProcessor.java:68)
at org.apache.flume.SinkRunner$PollingRunner.run(SinkRunner.java:147)
at java.lang.Thread.run(Thread.java:744)
Caused by: com.fasterxml.jackson.core.JsonParseException: Unrecognized token 'http': was expecting ('true', 'false' or 'null')
at [Source: java.io.ByteArrayInputStream@20d7aa52; line: 1, column: 9]
at com.fasterxml.jackson.core.JsonParser._constructError(JsonParser.java:1524)
at com.fasterxml.jackson.core.base.ParserMinimalBase._reportError(ParserMinimalBase.java:557)
at com.fasterxml.jackson.core.json.UTF8StreamJsonParser._reportInvalidToken(UTF8StreamJsonParser.java:3095)
at com.fasterxml.jackson.core.json.UTF8StreamJsonParser._handleUnexpectedValue(UTF8StreamJsonParser.java:2340)
at com.fasterxml.jackson.core.json.UTF8StreamJsonParser._nextTokenNotInObject(UTF8StreamJsonParser.java:818)
at com.fasterxml.jackson.core.json.UTF8StreamJsonParser.nextToken(UTF8StreamJsonParser.java:698)
at com.fasterxml.jackson.databind.MappingIterator.hasNextValue(MappingIterator.java:159)
at org.kitesdk.morphline.json.ReadJsonBuilder$ReadJson.doProcess(ReadJsonBuilder.java:109)
at org.kitesdk.morphline.stdio.AbstractParser.doProcess(AbstractParser.java:96)
... 10 more
We have the following string which is a valid JSON ...
显然 JSON 解析器不同意！
但是，异常表示错误在 "line 1: column 9"，并且 JSON 开头附近没有 "http" 标记。所以我怀疑解析器在错误发生时试图解析与这个字符串不同的东西。
您需要找到JSON 实际上 正在解析的内容。 运行 调试器中的应用程序，在 JsonParseException 的相关构造函数上设置断点...然后找出它试图解析的 ByteArrayInputStream 中的内容。
我遇到这个异常很久了，一直没能查明问题所在。异常显示第 1 行第 9 列。我犯的错误是获取 flume 正在处理的文件的第一行。
Apache flume 在补丁中处理文件的内容。因此，当 flume 抛出此异常并显示第 1 行时，它表示当前补丁中的第一行。
如果您的 flume 代理配置为使用批量大小 = 100，并且（例如）文件包含 400 行，这意味着在以下行之一中抛出异常 1, 101, 201,301 .
如何找出引起问题的线路？
您可以通过三种方式做到这一点。
1- 在调试模式下拉取源代码和 运行 代理。如果你是像我这样的普通开发者，不知道怎么做，请检查其他两个选项。
2- 尝试根据批量大小拆分文件并再次 运行 flume 代理。如果将文件拆分为 4 个文件，并且在第 301 行和第 400 行之间存在无效 json，则 flume 代理将处理前 3 个文件并在第四个文件处停止。拿第四个文件并再次将其拆分为更多更小的文件。继续这个过程，直到你到达一个只有一行的文件并且 flume 在处理它时失败。
3- 将 flume 代理的批量大小减少到只有一个，并比较您正在使用的接收器输出中已处理事件的数量。例如，在我的例子中，我使用的是 Solr sink。该文件包含 400 行。 flume 代理配置为批量大小=100。当我 运行 flume 代理时，它在某个时候失败并抛出该异常。此时检查 Solr 中摄取了多少文档。如果第 346 行存在无效 json，则索引到 Solr 中的文档数将为 345，因此下一行是导致问题的行。
在我的例子中，我遵循了第三个选项，幸运的是我查明了导致问题的行。
这是一个很长的答案，但实际上并没有解决异常。我如何克服这个例外？
我不知道为什么 Jackson 库在解析 json 字符串时抱怨包含转义字符 \n \r \t。我认为（但我不确定）Jackson 解析器默认转义这些字符，在这种情况下 json 字符串被分成两行（在 \n 的情况下），然后将每一行处理为一个单独的 json 字符串。
在我的例子中，我们使用自定义拦截器在被 flume 代理处理之前删除这些字符。这就是我们解决这个问题的方法。
这可能很明显，但请确保您发送给解析器的 URL 对象不是包含 www 地址的字符串。这将不工作：
ObjectMapper mapper = new ObjectMapper();
String www = "www.sample.pl";
Weather weather = mapper.readValue(www, Weather.class);
但这将：
ObjectMapper mapper = new ObjectMapper();
URL www = new URL("http://www.oracle.com/");
Weather weather = mapper.readValue(www, Weather.class);
在@RequestMapping
中添加produces = "application/json"
您正在尝试将包含 http 地址的字符串作为纯字符串传递，JSON 解析器为此抛出异常：JsonParseException 您需要通过 URL 正确传递字符串object or JSON String object (JSON.toString(url) 在我的案例中出现了类似的错误）。
您必须根据内容类型将正文转换为 json 格式。
所以在 ruby 中总是使用 to_json 函数这样做：
response = HTTParty.get("https://myurl.com",
headers: {
"X-API-Version" => "2",
"Content-type" => "application/json",
},
body: {
"field1" => "super content",
"field 2" => ["content0", "content1"]
}.to_json
)
我们有以下字符串，它是写入 HDFS 文件的有效 JSON。
{
"id":"tag:search.twitter.com,2005:564407444843950080",
"objectType":"activity",
"actor":{
"objectType":"person",
"id":"id:twitter.com:2302910022",
"link":"http%3A%2F%2Fwww.twitter.com%2Fme7me4610012",
"displayName":"",
"postedTime":"2014-01-21T11:06:06.000Z",
"image":"https%3A%2F%2Fpbs.twimg.com%2Fprofile_images%2F563125491159162881%2FfypkHK3M_normal.jpeg",
"summary":"ضًـأّيِّعٌهّ أّروٌأّحًنِأّ تٌـشُـتٌـهّـيِّ مًنِ يِّفُـهّـمًهّـأّ فُـقُط حسابي بالإنستقرام lloooo_20",
"links":[
{
"href":null,
"rel":"me"
}
],
"friendsCount":10503,
"followersCount":10325,
"listedCount":12,
"statusesCount":84957,
"twitterTimeZone":null,
"verified":false,
"utcOffset":null,
"preferredUsername":"me7me4610012",
"languages":[
"ar"
],
"favoritesCount":17
},
"verb":"share",
"postedTime":"2015-02-08T12:56:35.000Z",
"generator":{
"displayName":"Twitter for Android",
"link":"http%3A%2F%2Ftwitter.com%2Fdownload%2Fandroid"
},
"provider":{
"objectType":"service",
"displayName":"Twitter",
"link":"http%3A%2F%2Fwww.twitter.com"
},
"link":"http%3A%2F%2Ftwitter.com%2Fme7me4610012%2Fstatuses%2F564407444843950080",
"body":"RT @sckud1: فيديو: إمام يرفض بغضب الصلاة على أحد قتلى حزب الله في سوريا بسبب إطلاق النار: ماعاد http%3A%2F%2Ft.co%2FC55SaQKmUV http%3A%2F%2Ft.co%2Ft5TjIln…",
"object":{
"id":"tag:search.twitter.com,2005:564407126526013440",
"objectType":"activity",
"actor":{
"objectType":"person",
"id":"id:twitter.com:462268717",
"link":"http%3A%2F%2Fwww.twitter.com/sckud1",
"displayName":"صفق الهوى",
"postedTime":"2012-01-12T19:24:17.000Z",
"image":"https%3A%2F%2Fpbs.twimg.com%2Fprofile_images%2F508424482885615616%2FmPBGZBPx_normal.jpeg",
"summary":"اعلانك في سوق الخليج يحقق لك الوصول الى اكثر من مليون متابع خليجي http%3A%2F%2Fmarketgulf.com",
"links":[
{
"href":"http%3A%2F%2Fmarketgulf.com",
"rel":"me"
}
],
"friendsCount":435237,
"followersCount":464951,
"listedCount":708,
"statusesCount":1071685,
"twitterTimeZone":"Riyadh",
"verified":false,
"utcOffset":"10800",
"preferredUsername":"sckud1",
"languages":[
"ar"
],
"location":{
"objectType":"place",
"displayName":"Made in K S A"
},
"favoritesCount":77
},
"verb":"post",
"postedTime":"2015-02-08T12:55:19.000Z",
"generator":{
"displayName":"Tweet Old Post",
"link":"http%3A%2F%2Fwww.ajaymatharu.com%2F"
},
"provider":{
"objectType":"service",
"displayName":"Twitter",
"link":"http%3A%2F%2Fwww.twitter.com"
},
"link":"http%3A%2F%2Ftwitter.com%2Fsckud1%2Fstatuses%2F564407126526013440",
"body":"فيديو: إمام يرفض بغضب الصلاة على أحد قتلى حزب الله في سوريا بسبب إطلاق النار: ماعاد http%3A%2F%2Ft.co%2FC55SaQKmUV http%3A%2F%2Ft.co%2Ft5TjIlnZgN",
"object":{
"objectType":"note",
"id":"object:search.twitter.com,2005:564407126526013440",
"summary":"فيديو: إمام يرفض بغضب الصلاة على أحد قتلى حزب الله في سوريا بسبب إطلاق النار: ماعاد http%3A%2F%2Ft.co%2FC55SaQKmUV http%3A%2F%2Ft.co%2Ft5TjIlnZgN",
"link":"http%3A%2F%2Ftwitter.com%2Fsckud1%2Fstatuses%2F564407126526013440",
"postedTime":"2015-02-08T12:55:19.000Z"
},
"favoritesCount":0,
"twitter_entities":{
"hashtags":[
],
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],
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{
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"display_url":"hasterya.com/archives/34688…",
"indices":[
85,
107
]
}
],
"user_mentions":[
],
"symbols":[
],
"media":[
{
"id":564407126341468160,
"id_str":"564407126341468160",
"indices":[
108,
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],
"media_url":"http%3A%2F%2Fpbs.twimg.com%2Fmedia%2FB9UtSoJIQAA07-r.jpg",
"media_url_https":"https%3A%2F%2Fpbs.twimg.com%2Fmedia%2FB9UtSoJIQAA07-r.jpg",
"url":"http%3A%2F%2Ft.co%2Ft5TjIlnZgN",
"display_url":"pic.twitter.com/t5TjIlnZgN",
"expanded_url":"http%3A%2F%2Ftwitter.com%2Fsckud1%2Fstatus%2F564407126526013440%2Fphoto%2F1",
"type":"photo",
"sizes":{
"large":{
"w":320,
"h":180,
"resize":"fit"
},
"thumb":{
"w":150,
"h":150,
"resize":"crop"
},
"small":{
"w":320,
"h":180,
"resize":"fit"
},
"medium":{
"w":320,
"h":180,
"resize":"fit"
}
}
}
]
},
"twitter_extended_entities":{
"media":[
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"indices":[
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],
"media_url":"http%3A%2F%2Fpbs.twimg.com%2Fmedia%2FB9UtSoJIQAA07-r.jpg",
"media_url_https":"https%3A%2F%2Fpbs.twimg.com%2Fmedia%2FB9UtSoJIQAA07-r.jpg",
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"display_url":"pic.twitter.com/t5TjIlnZgN",
"expanded_url":"http%3A%2F%2Ftwitter.com%2Fsckud1%2Fstatus%2F564407126526013440%2Fphoto%2F1",
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},
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}
}
}
]
},
"twitter_filter_level":"low",
"twitter_lang":"ar"
},
"favoritesCount":0,
"twitter_entities":{
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],
"trends":[
],
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"url":"http%3A%2F%2Ft.co%2FC55SaQKmUV",
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97,
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"screen_name":"sckud1",
"name":"صفق الهوى",
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"resize":"fit"
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"resize":"fit"
}
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"id_str":"564407126341468160",
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139,
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],
"media_url":"http%3A%2F%2Fpbs.twimg.com%2Fmedia%2FB9UtSoJIQAA07-r.jpg",
"media_url_https":"https%3A%2F%2Fpbs.twimg.com%2Fmedia%2FB9UtSoJIQAA07-r.jpg",
"url":"http%3A%2F%2Ft.co%2Ft5TjIlnZgN",
"display_url":"pic.twitter.com/t5TjIlnZgN",
"expanded_url":"http%3A%2F%2Ftwitter.com%2Fsckud1%2Fstatus%2F564407126526013440%2Fphoto%2F1",
"type":"photo",
"sizes":{
"large":{
"w":320,
"h":180,
"resize":"fit"
},
"thumb":{
"w":150,
"h":150,
"resize":"crop"
},
"small":{
"w":320,
"h":180,
"resize":"fit"
},
"medium":{
"w":320,
"h":180,
"resize":"fit"
}
},
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}
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},
"twitter_filter_level":"low",
"twitter_lang":"ar",
"retweetCount":1,
"gnip":{
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],
"urls":[
{
"url":"http%3A%2F%2Ft.co%2Ft5TjIlnZgN",
"expanded_url":"http%3A%2F%2Ftwitter.com%2Fsckud1%2Fstatus%2F564407126526013440%2Fphoto%2F1",
"expanded_status":200
},
{
"url":"http%3A%2F%2Ft.co%2FC55SaQKmUV",
"expanded_url":"http%3A%2F%2Fwww.hasterya.com%2Farchives%2F34688utm_source%3DReviveOldPost%26utm_medium%3Dsocial%26utm_campaign%3DReviveOldPost",
"expanded_status":200
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}
编辑
我们配置了一个 flume 代理，它从该文件读取数据并将其传递给 Solr 接收器，但不幸的是，标题中的这个异常被抛出。
这是堆栈跟踪
org.kitesdk.morphline.api.MorphlineRuntimeException: com.fasterxml.jackson.core.JsonParseException: Unrecognized token 'http': was expecting ('true', 'false' or 'null')
at [Source: java.io.ByteArrayInputStream@20d7aa52; line: 1, column: 9]
at org.kitesdk.morphline.stdio.AbstractParser.doProcess(AbstractParser.java:98)
at org.kitesdk.morphline.base.AbstractCommand.process(AbstractCommand.java:156)
at org.kitesdk.morphline.stdlib.TryRulesBuilder$TryRules.doProcess(TryRulesBuilder.java:120)
at org.kitesdk.morphline.base.AbstractCommand.process(AbstractCommand.java:156)
at org.kitesdk.morphline.base.AbstractCommand.doProcess(AbstractCommand.java:181)
at org.kitesdk.morphline.base.AbstractCommand.process(AbstractCommand.java:156)
at org.apache.flume.sink.solr.morphline.MorphlineHandlerImpl.process(MorphlineHandlerImpl.java:128)
at org.apache.flume.sink.solr.morphline.MorphlineSink.process(MorphlineSink.java:141)
at org.apache.flume.sink.DefaultSinkProcessor.process(DefaultSinkProcessor.java:68)
at org.apache.flume.SinkRunner$PollingRunner.run(SinkRunner.java:147)
at java.lang.Thread.run(Thread.java:744)
Caused by: com.fasterxml.jackson.core.JsonParseException: Unrecognized token 'http': was expecting ('true', 'false' or 'null')
at [Source: java.io.ByteArrayInputStream@20d7aa52; line: 1, column: 9]
at com.fasterxml.jackson.core.JsonParser._constructError(JsonParser.java:1524)
at com.fasterxml.jackson.core.base.ParserMinimalBase._reportError(ParserMinimalBase.java:557)
at com.fasterxml.jackson.core.json.UTF8StreamJsonParser._reportInvalidToken(UTF8StreamJsonParser.java:3095)
at com.fasterxml.jackson.core.json.UTF8StreamJsonParser._handleUnexpectedValue(UTF8StreamJsonParser.java:2340)
at com.fasterxml.jackson.core.json.UTF8StreamJsonParser._nextTokenNotInObject(UTF8StreamJsonParser.java:818)
at com.fasterxml.jackson.core.json.UTF8StreamJsonParser.nextToken(UTF8StreamJsonParser.java:698)
at com.fasterxml.jackson.databind.MappingIterator.hasNextValue(MappingIterator.java:159)
at org.kitesdk.morphline.json.ReadJsonBuilder$ReadJson.doProcess(ReadJsonBuilder.java:109)
at org.kitesdk.morphline.stdio.AbstractParser.doProcess(AbstractParser.java:96)
... 10 more
We have the following string which is a valid JSON ...
显然 JSON 解析器不同意！
但是，异常表示错误在 "line 1: column 9"，并且 JSON 开头附近没有 "http" 标记。所以我怀疑解析器在错误发生时试图解析与这个字符串不同的东西。
您需要找到JSON 实际上 正在解析的内容。 运行 调试器中的应用程序，在 JsonParseException 的相关构造函数上设置断点...然后找出它试图解析的 ByteArrayInputStream 中的内容。
我遇到这个异常很久了，一直没能查明问题所在。异常显示第 1 行第 9 列。我犯的错误是获取 flume 正在处理的文件的第一行。
Apache flume 在补丁中处理文件的内容。因此，当 flume 抛出此异常并显示第 1 行时，它表示当前补丁中的第一行。
如果您的 flume 代理配置为使用批量大小 = 100，并且（例如）文件包含 400 行，这意味着在以下行之一中抛出异常 1, 101, 201,301 .
如何找出引起问题的线路？
您可以通过三种方式做到这一点。
1- 在调试模式下拉取源代码和 运行 代理。如果你是像我这样的普通开发者，不知道怎么做，请检查其他两个选项。
2- 尝试根据批量大小拆分文件并再次 运行 flume 代理。如果将文件拆分为 4 个文件，并且在第 301 行和第 400 行之间存在无效 json，则 flume 代理将处理前 3 个文件并在第四个文件处停止。拿第四个文件并再次将其拆分为更多更小的文件。继续这个过程，直到你到达一个只有一行的文件并且 flume 在处理它时失败。
3- 将 flume 代理的批量大小减少到只有一个，并比较您正在使用的接收器输出中已处理事件的数量。例如，在我的例子中，我使用的是 Solr sink。该文件包含 400 行。 flume 代理配置为批量大小=100。当我 运行 flume 代理时，它在某个时候失败并抛出该异常。此时检查 Solr 中摄取了多少文档。如果第 346 行存在无效 json，则索引到 Solr 中的文档数将为 345，因此下一行是导致问题的行。
在我的例子中，我遵循了第三个选项，幸运的是我查明了导致问题的行。
这是一个很长的答案，但实际上并没有解决异常。我如何克服这个例外？
我不知道为什么 Jackson 库在解析 json 字符串时抱怨包含转义字符 \n \r \t。我认为（但我不确定）Jackson 解析器默认转义这些字符，在这种情况下 json 字符串被分成两行（在 \n 的情况下），然后将每一行处理为一个单独的 json 字符串。
在我的例子中，我们使用自定义拦截器在被 flume 代理处理之前删除这些字符。这就是我们解决这个问题的方法。
这可能很明显，但请确保您发送给解析器的 URL 对象不是包含 www 地址的字符串。这将不工作：
ObjectMapper mapper = new ObjectMapper();
String www = "www.sample.pl";
Weather weather = mapper.readValue(www, Weather.class);
但这将：
ObjectMapper mapper = new ObjectMapper();
URL www = new URL("http://www.oracle.com/");
Weather weather = mapper.readValue(www, Weather.class);
在@RequestMapping
中添加produces = "application/json"
您正在尝试将包含 http 地址的字符串作为纯字符串传递，JSON 解析器为此抛出异常：JsonParseException 您需要通过 URL 正确传递字符串object or JSON String object (JSON.toString(url) 在我的案例中出现了类似的错误）。
您必须根据内容类型将正文转换为 json 格式。
所以在 ruby 中总是使用 to_json 函数这样做：
response = HTTParty.get("https://myurl.com",
headers: {
"X-API-Version" => "2",
"Content-type" => "application/json",
},
body: {
"field1" => "super content",
"field 2" => ["content0", "content1"]
}.to_json
)